Confidence: Medium · Source: FCC ULS · As of 2026-09-12
K2JFJ callsign genealogy
Currently held by JANICKE, JACK M
The FCC publishes a previous_call_sign on
every amateur license — a self-link to the licensee's prior callsign.
Following those links produces the chain below.
Previous callsigns
Older callsigns held by K2JFJ's current licensee, walking backwards.
- JOHNSON, JOHN FMIgranted 2016-07-02cancelled 2019-02-20
Successor callsigns
Callsigns held now by people who previously held K2JFJ.
- JOHNSON, JOHN FMIgranted 2019-03-19
All historical holders
Every license row we've seen with the callsign K2JFJ, oldest first.
- JANICKE, JACK M NJ1998-02-06 → cancelled 2010-02-09
- JOHNSON, JOHN F MI2019-02-20 → cancelled 2019-03-19